Extends contigs assembled using short read datasets like Illumina paired-end reads using long reads like PacBio RS long reads. Cerulean first operates with a simplified version of the assembly graph consisting only of long contigs and gradually improve the assembly by adding smaller contigs in each iteration. In contrast to the state-of-the-art long reads error correction technique, which requires high computational resources and long running time on a supercomputer even for bacterial genome datasets, Cerulean can produce comparable assembly using only a standard desktop in a short running time.